Dispensing gun for decarbonizing liquids



.March 4, 1930.

M. L. BLAIR 1,749,312

DISPENSING GUN FOR 'DECARBONIZING LQUIDSl Fild April so, 192'8 mark Las f' mi2.

@MH f' @Novum patented More4, 11930 ',UNIVTED'STATES PATENT oFFlcE MARK L. BLAIR, or rLIN'r, MICHIGAN, AssIGNoa 'ro ILIN'I, MICHIGAN, A COMPANY or MICHIGAN A C SPARK DXSIPENSING- GUN FOR DECARBONIZING LIQUDDS VApplication led April 30,

This invention .relates tondispensing ap- A' paratus and more particularly to a device 4for injecting a charge of decarbonizing liquid into a cylinder of'an internal combustion 'engine.

-After a period of use the'walls of the combustionchambers of an explosive engine become coated with a carbon deposit'which quantity.

serves to lessenl engine efficiency. One method some times employed to remove they carbon deposit and restore engine eiliciency consists in pouring a liquid decarbonizing solution into the cylinders when the engine is hot. The engine is thenallowed to remain idle for a certain interval, in which the liquid acts upon and loosens the carbon coating. When the engine is again started the loosened carbon is blown or carried out the exhaust line. This deearbonizing liquid is usually sold in small cans or containers-and it is sometimes, difficult to pour the liquid from the can into the combustion chamberand in the proper It is an object of the present invention to provide a dispenser for the liquidwhich may be readilyattached toand used with a regular container in which the liquid'is purchased 'y on the market and which will allow a predetermined amount of liquid to be easily and conveniently injected into-the engine combust-ion chamber. l Another object of the invention is to provide a device with which is associated a pressure pump for forcing the liquid charge into the engine combustionl-chamberjand which -embodies a check-valve to prevent the liquid entering the pumpl cylinder.

A further object of the invention is to provide a device that will dispense only a pre- 'determined charge ,regardless of the number of pump strokes employed or the degree of pressure actin on the liquid.

A further o ject of the invention is to provide a device which will distribute'the liquidto every surface of the combustion chamber.

Other objects and advantages will be apparent from the following specification taken in connection with the accompanying drawing wherein: v

Figure 1 is a vertical sectional view of the 1928. Serial No. 273,946.

Referring to drawing the reference character. 1 indicates a hollow cylindrical body portion providing a measuring chamber 2, and from which projects a boss or reduced portion 3 fordetachable engagement with the screw-threaded neck or spout 4 of the can or container 5. An integral flange 6 in the opening through.the boss forms a seat for the plate or disk valve 7., controlling communication between the container 5 and measuring chamber 2, the tension of the coil sprinfr- 8 interposed between the valve 7 and a xed perforated plate 9 tending to urge the valve toward its seat. The cylindrical ,body portion is also provided with. a lateral projection or boss 10into which is threaded the end ofa pump cylinder 11, having therein a reciprocatory piston 12, preferably Aconsisting of'a leather cu mounted on one end of a stem 13 that extends through the cap or cover 11i-of the pump cylinder and has a handle 15 at its opposite end. The end of the pump cylinder 11 is closed by a plate 16 positioned between the end of the cylinder and a shoulder in the hollow boss 1 0, and having a skirt porvchamber 2.and forms an outlet 'passageway leading through the elbow fitting 21, a pipe or conduitl 22 to aglobular diffuser tip or spray nozzle 23, having a number of small perforations or holes therein.

In use the boss 3 is threaded on the spout PLUG COMPANY, or-

from the measuring chamber. l

4 of the liquid container in place of the customary closure cap. By turning the container upside down to the position shown in Figure 1 the liquid by its own weight opens the valve 7 and passes into and ills the chamber 2 and the outlet passageway leading to the nozzle 23. The smallness of the openings or perforations in the nozzle and the surface tension of the liquid 'prevents the liquid from passing through the-perforations without the .application of pump pressure. At this stage the parts are inverted or turned so that the container is top side up, when the valve 7 will return to its seat. TheA nozzle may then be inserted through the customary spark plug openings and into the combustion chamber of the engine whereupon operation of the pump will force the liquid in the measuring chamber through the nozzle. On the pressure'stroke of the pump the air that had passed the piston on the suction stroke is replaced by air entering theport 26 in the cap 14, 'and is forced past the checkv valve 17 to act on and cause the discharge of liquid through the `standpipe 20. The check valve 17 at all other times remains'c-losed, thereby preventing the entrance of liquid into the pump cylinder where it might tend to cause deterioration of the piston material and destroy its action. It will be apparent that when the level .of the liquidv falls below the open end of the standpipe the air under pressure will escape through the outlet and no longer cause liquid to be discharged. Thus the length of the standpipe determines the amount of thev liquid to be injected, and by substituting various len ths of volume determining tubes or conduits, dierent predeterminedl quantities of liquid may be dispensed according tothe size of .the engine as well as the extent `of the carbon deposit.

Figure 4 shows'a modied typejof check.

valve comprising a ball 30 that'may-be substituted forthesprin pressed plate valve heretofore described. nstead of employing a hand operated pressure pump for forcing out the liquidthe pump may be replaced by suitable nipple with which may be connected a compressed air line.

While the invention has been described more or less specifically itis to be understood that the structure of the device may be modified as to details without departing from the scope of appended claims.

I claim: f

1. In a hand device for injecting a measured charge of decarbonizing iu'id into an engine cylinder, a luid container a metering chamber associated therewith, a valve con'- .trolling communication between the chamber and container', pressure means for forcing the contents out of the chamber when said valve is closed, a check valve between the chamber and pressure means and a discharge conduit leading from the chamber, having at its end a diffuser for spreading the discharged fluid in different directions.

2. A hand tool of the character described including in combination with a fluid container of a metering chamber detachably associated therewith. a valve controlling communication between the container and chamber, a pressure pump adapted to act on the contents of said chamber and a valve between the pump and chamber adapted to open under the pressure of said pump. 3. A handtoolfor injecting a measured charge of decarbonizing iuid into an engine cylinder, including a meteringchamber for attachment with a fluid container, a pressure pump adapted to act on the contents of the chamber to discharge the same, and a normally closed check valve between the pump and chamber to prevent fluid iow into the pump and which is opened under influence of the pump pressure. p 4. A device for dispensing a measured char e of fluid including a metering chainber or attachment with a fluid container, a pressure pump adapted -to act on the contents of the chamber to discharge the same and an outlet leading from the chamber and located in predetermined spaced relation with the ends of the chamber to' control the volume of fluid discharged.- 5. A device for dispensing 'a measured charge of fluid including a metering chamber for attachment with a fluid container and a pressure pump adaptedv to act on the contents of the chamber to discharge the same, an outlet passageway leading from a predetermined point in said chamber to control. the volume of iuid discharged, and a ,diffuser nozzle associated with the end of said passageway.

6. device for dispensing a measured charge of fluid, including a metering chamleading from the chamber and provided at its end with a perforate diffuser nozzle.

8. A device for dispensing a measured dispensing a Ameasured charge of fluid, including a metering chamf p I ber for attachment with a fluid container, a pressure pump associated therewith, and check valves interposed respectively between the chamber and container and between the chamber and pump, an outletpassageway leading from the chamber and a stand pipe forming a part of said passageway and eX- chamber and the'conta'iner movable to open position when the device is turned upside down to allow fluid .to pass from the container to the chamber and movable to closed position'when the. device is restored to upright position to cut oil' communication be- .tween the container and chamber, and. pressure means to force the fluidfrom the chamber when said valve is closed.

10. A hand device for dispensing a measi ured charge of fluid, including a metering chamber adapted for attachment-with a fluid container, a valve interposed between said f chamber and the container movable -to open 'position when the device'is turned upside down to allow fluid to pass from the container to the chamber and movable to closed position when the device is turned right side up to cut 0E communication between the container and chamber, va pressure pump associated with said chamber, and a spring pressed valve normally closingy communication between the chamber and pump but movable off its seat under the action of said pump to permit pump pressure to eject the fluid.

- A dischargmg means includes a pressure pump.

from said chamber. a

11. Means for dispensing a measured charge of liquid from a container including a chamber adapted for detachable engagement with the container, a check valve to control communication between the container and said chamber, a pressure pump associated with said chamber adapted upon operation to place the liquid in the chamber under pressure, a check valve interposed between the pump and chamber' to 4prevent the liquid entering said pump, and a replaceablel discharge pipe extending for a' predeter# mined distance withinv said chamber through which the liquid isdischarged under the influence of pump pressure.' until the liquid level falls below the open end of 4said pipe, whereby the amount of liquid to be discharged is definitely controlled.

12. `Ahand' device for injecting measured charge of. decarbonizing fluid into an engine cylinder or the like comprising a chambered housing adapted for detachable engagement with a vessel containing decarbonizing fluid,l

a normally closed valve controlling communicationbetween the vessel and chambered housing, and movable off its seat under the' weight of the fluid when the vessel and housing are inverted, to allow fluid to pass into the chambered housing, and means to permit apredetermined' amount of fluid to be discharged from the chambered housing after the housing and vessel are restored to upright position.

' 13. A hand'device for injecting a measured.

charge of decarbonizing fluid into an engine cylinder or the like including a vessel con-y taining a supply of decarbonizing fluid, a metering chamber of a given volume connected with said vessel, a valve governing.` `commun1cat1on between the vessel and chamincluding a vessel for a supply of decarboniz ing fluid, a chambered housing connected with said vessel and into which the fluid gravitates when the vessel is turned -upside down, a valve to prevent return of the fluid to said -ves'sel when the vessel is top side up and means for discharging fluid from the housing.

15. The structure of claim 14, wherein a discharge conduit leads from the chambered housing and is provided at its end with a diffuser tip thatv is adapted for insertion in an engine cylinder and to. spread the discharged fluid in different directions.4

16. The structure of'claim 14 wherein the Y 17. The structure of claim 14 wherein the discharging means includes a pressure pump land a valved connection between the pump and housing to prevent the fluid entering said pump from the housing.

18. The structure of claim 14, wherein a dischargeconduit leads from the chambered housing and is provided at its end with a diffuser tip that is adapted for insertion in an engine cylinder and to spread the discharged fluid in different directions, and a pressure pump is connected with the housing.

19. The structure vof claim 14, wherein a discharge conduit leads from the housing and has a portion thereof extending into the housing with an opening at a predetermined position below the top ofthe housing to definitely govern the amount of fluid to be l discharged. l

20. In a device asdescrbed in claim 19,

wherein the portion extending into the housing is interchangeable with other like portions of different length so that the amount of fluid tob e dischargedcan be varied by the substitution of one portion for another.

21. A han'd device for injecting a measured 'charge of decarbonizing fluid into an engine the trade container into said chambered housing when the device is upside down, and which prevents return of the uid when the device is top side up, a pressure pump carried by and extending laterally from the housing, a check valve between the pump and chambered housing, and a discharge conduit leading from the -chambered housing and having an interchangeable portion extending to a predetermined level into the housing, whereby pump pressure discharges a measured quantity 'of the Huid from the chamber.

In testimony whereof I aix my signature.

MARK L. BLAIR. 

